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authorUlrich Drepper <drepper@redhat.com>2004-03-07 05:26:02 +0000
committerUlrich Drepper <drepper@redhat.com>2004-03-07 05:26:02 +0000
commit021723ab784461de9eac57398ea16a47d4ab9366 (patch)
tree9fef57d701b88d5729e3150ea197f86957727998 /elf/do-lookup.h
parentbdf4a4f1eabb2e085b0610b53bb37b5263f4728d (diff)
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Update.
2004-03-06 Ulrich Drepper <drepper@redhat.com> * elf/dl-lookup.c: We don't need for specialized lookup functions. Combining the functionality does not slow down relocation processing, it might even speed it up a little. * sysdeps/generic/ldsodefs.h: Adjust prototypes for lookup function. Add only one function pointer to rtlf_global_ro. * elf/do-lookup.h: Replace #ifs with ifs. * elf/dl-libc.c: Adjust _dl_lookup_* callers. * elf/dl-reloc.c: Likewise. * elf/dl-runtime.c: Likewise. * elf/dl-sym.c: Likewise. * elf/rtld.c: Likewise. Adjust _rtld_global_ro initialization. * sysdeps/generic/ldsodefs.h (__rtld_local_attribute__, __rtld_global_attribute__): Undef after use. (_rtld_local_ro): Define __rtld_local_attribute__ with just hidden if available. * sysdeps/alpha/Subdirs: New file. * sysdeps/alpha/soft-fp/Makefile: New file. * sysdeps/alpha/soft-fp/Versions: New file. * sysdeps/alpha/soft-fp/local-soft-fp.h: New file. * sysdeps/alpha/soft-fp/ots_add.c: New file. * sysdeps/alpha/soft-fp/ots_cmp.c: new file. * sysdeps/alpha/soft-fp/ots_cmpe.c: New file. * sysdeps/alpha/soft-fp/ots_cvtqux.c: New file. * sysdeps/alpha/soft-fp/ots_cvtqx.c: New file. * sysdeps/alpha/soft-fp/ots_cvttx.c: New file. * sysdeps/alpha/soft-fp/ots_cvtxq.c: New file. * sysdeps/alpha/soft-fp/ots_cvtxt.c: New file. * sysdeps/alpha/soft-fp/ots_div.c: New file. * sysdeps/alpha/soft-fp/ots_mul.c: New file. * sysdeps/alpha/soft-fp/ots_nintxq.c: New file. * sysdeps/alpha/soft-fp/ots_sub.c: New file.
Diffstat (limited to 'elf/do-lookup.h')
-rw-r--r--elf/do-lookup.h137
1 files changed, 64 insertions, 73 deletions
diff --git a/elf/do-lookup.h b/elf/do-lookup.h
index 014a06a..9e78dbf 100644
--- a/elf/do-lookup.h
+++ b/elf/do-lookup.h
@@ -17,21 +17,16 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#if VERSIONED
-# define FCT do_lookup_versioned
-# define ARG const struct r_found_version *const version
-#else
-# define FCT do_lookup
-# define ARG int flags
-#endif
-
/* Inner part of the lookup functions. We return a value > 0 if we
found the symbol, the value 0 if nothing is found and < 0 if
something bad happened. */
static int
-FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
- struct sym_val *result, struct r_scope_elem *scope, size_t i, ARG,
- struct link_map *skip, int type_class)
+__attribute_noinline__
+do_lookup_x (const char *undef_name, unsigned long int hash,
+ const ElfW(Sym) *ref, struct sym_val *result,
+ struct r_scope_elem *scope, size_t i,
+ const struct r_found_version *const version, int flags,
+ struct link_map *skip, int type_class)
{
struct link_map **list = scope->r_list;
size_t n = scope->r_nlist;
@@ -44,10 +39,8 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
const ElfW(Half) *verstab;
Elf_Symndx symidx;
const ElfW(Sym) *sym;
-#if ! VERSIONED
int num_versions = 0;
const ElfW(Sym) *versioned_sym = NULL;
-#endif
map = list[i];
@@ -100,67 +93,71 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
/* Not the symbol we are looking for. */
continue;
-#if VERSIONED
- if (__builtin_expect (verstab == NULL, 0))
+ if (version != NULL)
{
- /* We need a versioned symbol but haven't found any. If
- this is the object which is referenced in the verneed
- entry it is a bug in the library since a symbol must
- not simply disappear.
-
- It would also be a bug in the object since it means that
- the list of required versions is incomplete and so the
- tests in dl-version.c haven't found a problem.*/
- assert (version->filename == NULL
- || ! _dl_name_match_p (version->filename, map));
-
- /* Otherwise we accept the symbol. */
+ if (__builtin_expect (verstab == NULL, 0))
+ {
+ /* We need a versioned symbol but haven't found any. If
+ this is the object which is referenced in the verneed
+ entry it is a bug in the library since a symbol must
+ not simply disappear.
+
+ It would also be a bug in the object since it means that
+ the list of required versions is incomplete and so the
+ tests in dl-version.c haven't found a problem.*/
+ assert (version->filename == NULL
+ || ! _dl_name_match_p (version->filename, map));
+
+ /* Otherwise we accept the symbol. */
+ }
+ else
+ {
+ /* We can match the version information or use the
+ default one if it is not hidden. */
+ ElfW(Half) ndx = verstab[symidx] & 0x7fff;
+ if ((map->l_versions[ndx].hash != version->hash
+ || strcmp (map->l_versions[ndx].name, version->name))
+ && (version->hidden || map->l_versions[ndx].hash
+ || (verstab[symidx] & 0x8000)))
+ /* It's not the version we want. */
+ continue;
+ }
}
else
{
- /* We can match the version information or use the
- default one if it is not hidden. */
- ElfW(Half) ndx = verstab[symidx] & 0x7fff;
- if ((map->l_versions[ndx].hash != version->hash
- || strcmp (map->l_versions[ndx].name, version->name))
- && (version->hidden || map->l_versions[ndx].hash
- || (verstab[symidx] & 0x8000)))
- /* It's not the version we want. */
- continue;
- }
-#else
- /* No specific version is selected. There are two ways we
- can got here:
-
- - a binary which does not include versioning information
- is loaded
-
- - dlsym() instead of dlvsym() is used to get a symbol which
- might exist in more than one form
-
- If the library does not provide symbol version
- information there is no problem at at: we simply use the
- symbol if it is defined.
-
- These two lookups need to be handled differently if the
- library defines versions. In the case of the old
- unversioned application the oldest (default) version
- should be used. In case of a dlsym() call the latest and
- public interface should be returned. */
- if (verstab != NULL)
- {
- if ((verstab[symidx] & 0x7fff)
- >= ((flags & DL_LOOKUP_RETURN_NEWEST) ? 2 : 3))
+ /* No specific version is selected. There are two ways we
+ can got here:
+
+ - a binary which does not include versioning information
+ is loaded
+
+ - dlsym() instead of dlvsym() is used to get a symbol which
+ might exist in more than one form
+
+ If the library does not provide symbol version
+ information there is no problem at at: we simply use the
+ symbol if it is defined.
+
+ These two lookups need to be handled differently if the
+ library defines versions. In the case of the old
+ unversioned application the oldest (default) version
+ should be used. In case of a dlsym() call the latest and
+ public interface should be returned. */
+ if (verstab != NULL)
{
- /* Don't accept hidden symbols. */
- if ((verstab[symidx] & 0x8000) == 0 && num_versions++ == 0)
- /* No version so far. */
- versioned_sym = sym;
+ if ((verstab[symidx] & 0x7fff)
+ >= ((flags & DL_LOOKUP_RETURN_NEWEST) ? 2 : 3))
+ {
+ /* Don't accept hidden symbols. */
+ if ((verstab[symidx] & 0x8000) == 0
+ && num_versions++ == 0)
+ /* No version so far. */
+ versioned_sym = sym;
- continue;
+ continue;
+ }
}
}
-#endif
/* There cannot be another entry for this symbol so stop here. */
goto found_it;
@@ -170,11 +167,7 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
looking for an unversioned symbol and the version is not the
default version we still accept this symbol since there are
no possible ambiguities. */
-#if VERSIONED
- sym = NULL;
-#else
sym = num_versions == 1 ? versioned_sym : NULL;
-#endif
if (sym != NULL)
{
@@ -204,13 +197,11 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
}
}
-#if VERSIONED
/* If this current map is the one mentioned in the verneed entry
and we have not found a weak entry, it is a bug. */
- if (symidx == STN_UNDEF && version->filename != NULL
+ if (symidx == STN_UNDEF && version != NULL && version->filename != NULL
&& __builtin_expect (_dl_name_match_p (version->filename, map), 0))
return -1;
-#endif
}
while (++i < n);